/// <summary>
/// Gets the row containing the specified primary key values by searching the rows
/// filtered by the state.
/// </summary>
internal DataRow Find(object [] keys, DataViewRowState rowStateFilter)
{
if (table.PrimaryKey.Length == 0)
{
throw new MissingPrimaryKeyException("Table doesn't have a primary key.");
}
if (keys == null)
{
throw new ArgumentException("Expecting " + table.PrimaryKey.Length + " value(s) for the key being indexed, but received 0 value(s).");
}
Index index = table.GetIndex(table.PrimaryKey, null, rowStateFilter, null, false);
int record = index.Find(keys);
if (record != -1 || !table._duringDataLoad)
{
return(record != -1 ? table.RecordCache [record] : null);
}
// If the key is not found using Index *and* if DataTable is under BeginLoadData
// then, check all the DataRows for the key
record = table.RecordCache.NewRecord();
try {
for (int i = 0; i < table.PrimaryKey.Length; ++i)
{
table.PrimaryKey [i].DataContainer [record] = keys [i];
}
bool found;
foreach (DataRow row in this)
{
int rowIndex = Key.GetRecord(row, rowStateFilter);
if (rowIndex == -1)
{
continue;
}
found = true;
for (int columnCnt = 0; columnCnt < table.PrimaryKey.Length; ++columnCnt)
{
if (table.PrimaryKey [columnCnt].CompareValues(rowIndex, record) == 0)
{
continue;
}
found = false;
break;
}
if (found)
{
return(row);
}
}
return(null);
} finally {
table.RecordCache.DisposeRecord(record);
}
}
